be on the page you want to send a link to a friend, then move your mouse pointer (arrow) over the top bar showing at the very top of your computer. it shows where you are at that moment, left click on it, then after it turns blue (hightlighted) do a right click and go to copy and click. then when in your reply or posting to your friend, click in the body of your post, then right click and go to paste and click. it should then show up in your post.
like this
http://www.quiltingboard.com/t-87405-1.htm#2177369